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学科主题: Environmental Sciences; Marine & Freshwater Biology
题名: The characteristics of nutrients and eutrophication in the Pearl River estuary, South China
作者: Huang, XP ; Huang, LM ; Yue, WZ
关键词: nutrients ; spatial-temporal variation ; sources ; eutrophication ; estuaries ; South China
刊名: MARINE POLLUTION BULLETIN
发表日期: 2003
卷: 47, 期:40549, 页:30-36
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
项目归属: LED
摘要: In the spring of 1998, 24-h time series and synchronization of vertical profiles of NO3-N, NO2-N, NH3-N, PO4-P, chlorophyll a, suspended substance, salinity, temperature and other chemical parameters were taken at 10 stations in the Pearl River estuary in order to analyze the status and characteristics of nutrients and eutrophication. The results indicated that dissolved inorganic nitrogen (DIN) mainly came from the four river channels in the main estuary, and NO3-N was the main form of DIN in most area. The concentration of DIN was general above 0.30 mg l(-1) in the estuary, and more than 0.50 mg l(-1) in most part. Phosphate from four river channels was not the main sources, but land-based sources from the area near Shenzhen Bay or along the estuary were obvious, and other land-based sources outside the estuary brought by coastal current and flood tide current were also the main contributions. The concentration of phosphate was generally about 0.015 mg l(-1) except the area near Shenzhen Bay. The ratio of N:P was generally high, and it was higher in the north than in the south. The highest ratio was higher than 300, and the lowest one was over 30. The concentration of chlorophyll a was about 0.8-7.8 mg m(-3), and turbidity and phosphate may be the main two limiting factors for algal bloom in the estuary. The concentration of nutrients decreased slightly in the past decade, but still stayed at a high level. The nutrients mainly came from domestic sewage, industrial wastewater, agriculture fertilizer and marine culture in the Pearl River estuary. (C) 2003 Elsevier Science Ltd. All rights reserved.
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WOS记录号: WOS:000183700200006
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5561
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Huang, XP; Huang, LM; Yue, WZ.The characteristics of nutrients and eutrophication in the Pearl River estuary, South China,MARINE POLLUTION BULLETIN,2003,47(40549):30-36
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